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    <title>Document</title>
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<body>
    <script type="text/javascript">
        // function sum (a,b,c){
        //     return a+b+c
        // }
        // const add = sum(1,2,3)
        // console.log(add)

        function sum (a){
            return(b) =>{
                return(c) =>{
                    return a+b+c
                }
            }
        }
        const add = sum(1)(2)(3)
        console.log(add)
    </script>
</body>
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